A 34-year-old woman who had to be cut free from her crashed car has sustained chest and leg injuries.
An ESA spokesperson said the woman's car had collided with the back of a truck on Bennelong Street near Erkine Street in Macquarie.
Firefighters on the scene removed the roof of the car to free the woman who was driving alone.
Intensive care paramedics stabilised the woman, who was taken to the Canberra Hospital.
ACT Police said traffic was temporarily closed near Erkine Street.
Both the ACT Ambulance Service and ACT Fire & Rescue attended the scene.